tuttle



(No Model.) '2 Sheets-Sheet 1.

I. J. TUTTLE.

SHUTTLE SUPPORTING AND OPERATING MECHANISM FOR SEWING MACHINES.

No. 316,081. Patented Apr. 21, 1885.

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2 Sheets-Sheet 2.

(No Model.)

I .J. TUTTLE.

SHUTTLE SUPPORTING AND OPERATING MECHANISM FOR SEWING MACHINES.

110. 316,081. Patented 1PT. 21, 1885.

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UNrT-n A STATES :ATENT OFFICE.

IRA J. TUTTLE, OF \VHEATVILLE, NEW YORK, ASSIGNOR TO THE \VHEELER 8t WILSON MANUFACTURING COMPANY, OF vBBIDGEPORT, CONN.

SHUTTLE SUPPORTING AND OPERATING MECHANISM FOR SEWING MACHINES.

SPECIFICATION forming part of Letters Patent No. 316,081, dated April 21, 1885.

Application lilerl October 21, 1384'. (No model.) A I j To aZZ whom it may concern.-

Be it known that I, IRA J. TUTTLE, a citizen of the United States, residing at Wheatville, in the county of Genesee and State of 5 New York, have invented certain new and useful Improvements in Shuttle Supporting and Operating Mechanism for Sewing-Machines, of which the following is a specification, reference being had to the accompanying 1o drawings, forming a part thereof.

The object of my invention is to improve that class of sewing-machines known as rtary or revolving shuttle machines by providing certain constructions whereby the I shuttle may be supported and operated without a shuttlerace, and the loops of needlethread still be easily carried around theshuttle in formingv the stitches, thus obviating much friction and wear in this class of machines without detracting from their efficiency.

The subject-matter of the present case is shown and described in a modified form in my application, Serial No. 134,626, filed June 12, 1884:, (case A,) but is not therein claimed, the claims of the said application relating only to the shuttle herein shown, which is especially adapted to my supporting and operating mechanism, but which is not of itself 0 herein claimed.

To enable those skilled in the art to fully understand my invention, I will now describe the same in connection with the drawings, in which- Figure l is a bottom plan view of a portion of a sewing-machine with my improvements applied thereto. Fig. 2 is a front elevation of the same with the shuttle removed. Fig. 3 is a viewsimilar to Fig. 1, but with some of the parts in slightly different positions... Figs. 4, 5, and 6 are front views of the shuttle-carrier in different positions to illustrate the manner in which the needle-thread is successively drawn over the arms thereof as the shuttle rotates to carry the needle-thread around itself. Fig. 7 is a detached view of a two part shuttle specially adapted for use with my shuttle mechanism- H indicates the work-plate of a sewing-machine,and F a rotary shaft properly supported thereby, said shaft being operated in any suitable manner. The shaft F is provided at its forward end with a disk, A, having on its face arms or lugs a, b, and c, said disk,with

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To facilitate the passage of the loops of needle-thread, the outer corners or faces of' the arms or lugs a, b, and c are beveled off in the direction in which the thread is to be drawn across them, as indicated by the arrows in Figs. 4, 5, and 6.

The shuttle consists of two parts, B and B, the former being provided with a pin or journal, Z, fitting loosely in a sleeveor bearing, m, on the latter, whereby the part B is, adapted to rotate on the part B, which will remain stationary. The bobbin is inclosed between these two parts, and rests ,on the. sleeve m. The outer faces of the shuttle are projecting 'or bulging, as shown, and when the two parts are together the inner or rear edge of the stationary part B will be withinv the outer or forward edge of a fiange, q, on the rotary part B, said flange serving as a guide to direct the loops of needlethread over the said part B, .and thus prevent the thread from catching between the two parts.

To adapt the rotary part B of the shuttle to be driven by the carrier, said part is pro- 8o vided with a recess, 0, preferably formed by lugs on both sides thereof, as shown in Figs.

3 and 7, said recess loosely receiving the arm or lugb, which thus serves as a driver. The bulging or projecting portion of the rotary 8E part B of the shuttle is loosely embraced by. the arms of the carrier, in which the shuttle is held by a holder, f, bearing against the stationary part B of the shuttle. The holder f is intermittingly operated,so that the flange p 3 of the shuttle will be pressed closely against the ends of the arms of the carrier,as in Fig. 1, when the stitch is being tightened and the hook of the shuttle is adjacent to the needle, thus insuring the proper engagement of the said hook and needle to enable the former to seize the loops of needle-thread at each stitch; but during a portion of the revolution of the shuttle the holder is moved slightly outward, as shown in Fig. 3, when the shuttle will be co held with sufficient looseness between the holder and carrier to enable the needle-thread to pass easily over the ends of the arms of the carrier. The stationary part B of the shut; tie is provided with a lug, a, which'enga'ge's with the holder f, and thus prevents the'rotation of the said part B with the rotary partB.

Ois a bell-crank or angular lever, to the shorter arm (2 of which the shuttle-holderfis attached, said lever being pivoted at G to another angular lever, E, which is in turn pivoted at i to a plate, E, attached to depending lugs or projections on the bed-plate,'a supporting-plate, i, being preferably provided to sustain said lever E in place. The-lever E is of spring metal, and a projection on one arm thereof'is perforated for the reception of a small pin,j, on the plate E, said pin 'thus serving to hold said lever and the shuttle holder connected therewith in operative position. When the shuttle is to be inserted into orremoved from its carrier, the lever E is disengaged from its holding-pinj by the downward pressure of the finger of the operator in the loop is at the end of said lever, and the latter may then be moved to the position indicated by dotted lines in Fig. 1, swinging the shuttle-holder outward to permit of access to the shuttle.

The shuttle-holder is preferably operated from a double cam, G, secured to the shaft F, said cam having two working portions or cams, g and g.

D is a bar loosely connected at h with the longer arm d of the lever C, said bar having pins provided with rollers e and e, workingin contact with the cams g'and g, respectively. The projecting or working parts of the cams g and g are placed reversely, so that they will operate alternately on their respective rollers, the cam 9 moving the bar D in the direction indicated by the arrow in Fig. 1, and the cam 9 moving said bar in the opposite direction, as indicated by the arrow in Fig. 3. Thus as the shaft F rotates the bar D will be reciprocated to vibrate the lever G and its attached shuttle-holder in proper times or at the proper intervals to clamp and release the shuttle, as above described, the movements of the bar D and of the shuttle-holder connected therewith being positive in both directions, so as to be adapted to operate properly at high rates of speed.

. The operation of my mechanism is as follows: As the needle (not shown) descends and the shuttle-hook approaches the same the shuttle is held between its holder and carrier with sufficient firmness to insure the proper en,- gagement of the said hook with the loop of thread thrown out by the needle as the latter rises. The continued rotary movement of the shuttle carries the loop of needle-thread around, the same, drawing the rear limb of said loopover the beveled end of the arm or lug a, as indicated in Fig. 4;, the shuttle-holder being operated to release the shuttle in time for the passage of the thread over said arm, and while the shuttle is still held loosely the needle-thread passes around it and. over the beveled faces of the arms or lugs b and c, as indicated in Figs. 5 and 6. The holderf is then again pressed against the shuttle, caus- 'ing the flange p thereof to be forced into contact with the ends of the arms-of the carrier as the stitch is tightened by the take-up in the usual manner, and while the nextneedleloop is being taken by the hook of the shuttle, and thus the operation continues.

From the foregoing description it will be obvious that by the mechanism shown I am enabled to hold and operate a rotary shuttle with accuracy and in such a manner that the needle-thread may be easily carried around Having thus described my invention, I claim and desire to secure by Letters Patent 1. In a sewing-machine, the combination, with a rotary-shuttle carrier and its shaft, of a shuttle, a holder for retaining said shuttle in its carrier, and mechanism for vibrating said holder, whereby the'latter will be caused to hold said shuttle firmly and loosely alternately, substantially as set forth.

2. In a sewing-machine, the combination, with the shuttle-carrier and its shaft, of a shuttle, a holder for retaining said shuttle in its carrier, a double cam, and connections between said cam and holder for moving the latter, substantially as set forth.

3. In a sewing-machine, the combination, with a shuttle-carrier and its shaft, of a shuttle, a shuttle-holder, a bell-crank lever to which said holder is attached, a bar connected to said lever and having pins carrying antifriction rollers, and a double cam acting against said rollers to operate said holder, substantially as set forth.

4. In a sewing-machine, the combination, with the shuttle and its carrier, of a shuttleholder and a pivoted support with which said holder is connected, whereby said holder is adapted to be swung aside to permit of the insertion'or removal f the shuttle, substantially as set forth.

. 5. In a sewingmachine, the combination, with a rotary shuttle and its operating mechanism, of a shuttle-holder, a lever by which said .holder is carried, a second lever to which the holder-carrying lever is pivoted, said second lever having a spring-arm provided with a perforation or recess, and a fixed pin adapted to engage with said recess, substantially as set forth.

6. In a sewing-machine, the combination, with a rotary shaft and a shuttle-carrier comprising a plurality of arms or lugs having their outer faces beveled to facilitate the passage of the loops of needle-thread, of a shuttle having a projecting or bulging portion adapted to be embraced by said arms and a holder for ret-aining said shuttle in its carrier, substantially as set forth.

7. In a sewing-machine, the combination, with a rotary shaft, a shuttle-carrier having a plurality of arms or lugs, the outer faces of which are beveled to facilitate the passage of the needle-thread, and a shuttle-holder, of a shuttle having a projecting or bulging portion adapted to be embraced by said arms, and a rim which is gently forced against the ends of said arms when the said holder is pressed against the shuttle, substantially as set forth.

8. In a sewing-machine, the combination, with a rotary shaft, a shuttle-carrier having a plurality of arms or lugs, and ashuttle-holder, of a shuttle formed in two parts, one of which is adapted to rotate on the other, the rotary part of the said shuttle having a projecting or bulging portion adapted to be embraced by said arms or lugs, and a rim adapted to impinge against the ends of said arms, substantially as set forth.

9. In a sewing-machine, the combination, with a rotary shaft, a shuttle-carrier having a plurality of arms or lugs, and a shuttle-holder, of a shuttle formed in two parts, one of which is adapted to rotate on the other, the rotary part of the shuttle having a recess for the reception of one of said arms, which thus serves as a driver, and the stationary part of the shuttle being provided with a lug or projection whereby it is held from rotation, substan tially as set forth.

- 10. In a sewing-machine, the combination, with a rotary shaft, a shuttle-carrier, and a shuttle holder, of a shuttle formed in two parts, one of which is adapted to rotate on the other, the stationary part of said shuttle having a bearing, between which and said carrier the rotary part of said shuttle is supported, substantially as set forth.

11. In a sewing-machine, the combination, with a rotary shaft, a shuttle-carrier having a plurality of arms or lugs, and ashuttle-holder, of a shuttle formed in two parts, one of which is adapted to rotate on the other, the rotary part of said shuttle having a projecting or bulging portion adapted to be embraced by said arms, a recess adapted to receive one of said arms, which thus serves as a driver, and a rim adapted to impinge against the ends of said arms, and the stationary part of the shuttle having a lug adapted for contact with said holder to prevent said part from rotating, substantially as set forth.

In testimony whereof I have hereunto set my hand this 21st day of October, 1884.

IRA J. TUTTLE.

Witnesses:

W. P. BELL, A. B. BARRINGER. 

